Connecting rod aligning jig



June 7, 1949. J. M. LANTZ ET AL 2,472,163

CONNECTING ROD ALIGNING J'IG Filed Jan. 30, 1946 2 Sheets-Sheet 1 fa Jig/j ammwc A 7TO/2NEY June 7, 1949-. J. M. LANTZ EI'AL 2,472,163

CONNEQTING ROD ALIGNING JIG Filed Jan. 30, 1946 2 Sheets-Sheet 2 f/v VEN T025 Jewel/77201 60252 mmmzyqw/mg ATTORNEY Patented June 7, 1 949 CONNECTING ROD ALIGNING JIG Jewell M. Lantz, Oswego, and Edward R. Kerchal, Portland, Oreg.

Application January 30, 1946, Serial No. 644,225 3 Claims. (01. 153-32) This invention relates motive industry and rod aligning jig.

The main object of this invention is to provide a means whereby connecting rods may be tested for alignment and straightened within the testing means itself.

The second object is to provide an accurate and quick means for aligning rods, especially adapted to the modern type of connecting rods, wherein steel inserts are employed within the bearing members and wherein the lateral faces of the rods are surfaced.

The third object is to so construct a device that will lend itself to lateral as well as spiral corrections.

The fourth object is to so construct a device that a minimum amount of skill is required in order to produce a proper alignment.

generally to the autoparticularly to a connecting These and other objects we accomplish in a manner set forth in the following specification as illustrated in the accompanying drawings, in which Fig. 1 is a perspective view of the device itself.

Fig. 2 is a transverse section taken along the line 2-2 in Fig. 3.

Fig. 3 is a longitudinal section through the device, showing a piston and rod being tested and aligned.

Fig. 4 is a fragmentary section taken along the line 4-4 in Fig. 3.

Fig. 5 is a fragmentary side elevation showing the rod being tested for twist.

Fig. 6 is a plan of Fig. 5.

Similar numbers of reference refer to the same or similar parts throughout the several views Referring in detail to the drawing there is shown a standard l0, whose flanges H, are provided with holes I! for bolts (not shown), whereby same may be fastened to a bench.

Rising from the standard It] and integral therewith is a face plate l3, which is long enough to take in the longest connecting rod and piston, and preferably undercut to the face M of the standard ID, to make room for the table l5, formed on the ends of the spindle I 6, which is slidable within an opening IT. The face plate l3 occupies a plane normal to the axis of the spindle l6. Extending through the standard It! is an opening I 8 which partly intersects the opening l1. Within the opening H! are the sleeves I 9 and 20. The sleeve I9 is threaded to receive the binding screw formed on the stem 22, whose enlarged end 23 bears against the outer end of the sleeve 20, and is provided with a T handle I9 are cut away, curvature of the 24. The corner of the sleeves as shown, to conform to the spindle l6.

Opposed to the table I5 is a clamp 25, which is operated by a screw 26 through a slidable lever 27. A cross bar 28 is threaded to receive the screw 26, and it is slotted as are the members [5 and 28 to receive the bars 28, which are secured to the members l5 and 28 by means of the cap screw 30. The handle 3| extends through the head 32 of the screw 26. The purpose of the construction thus far described, is to provide a table l5 whose face 33 is parallel with the face plate is, and adjustable with relation thereto under the control of the clamping screw 2|.

In order to illustrate the purpose of this invention, there is shown a common form of connecting rod 34, whose bearing end 35 has its sides 36 faced and held between the members l5 and 25. There is also shown a common form of piston 31 which contains a tubular steel insert 38. Into the insert 38, is inserted a rod 39, which is actually a bending bar and is used to bend the connecting rod 34 while it is held between the members l5 and 25. In Fig. 3 it will be observed that the side of the piston 31, is out of alignment with the face plate [3. It will, therefore, be necessary to bend the piston 31 away from the face plate l3. Any other desired correction may also be made, whether it be lateral or longitudinal or a compound of both, the object being to apply the corrective action while the rod is held within the testing j'ig.

It is a well known fact, for example, that numerous devices have been constructed in which the rods are tested by means of one instrument and corrected while held by means of another instrument, thereby paving the way for error in correction and at the same time, requiring the expenditure of a great deal of time.

While we have thus illustrated and described our invention, it is not our desire to be limited to the precise form shown herein, and we intend to cover such forms and modifications of the invention as fall fairly within the appended claims.

We claim:

1. A device of the class described, having a combination of a standard having a face plate mounted thereon, a slide mounted in said standard normal to the plane of the face plate, a vise mounted on said slide having opposed faces parallel to the plane of the face plate adapted to receive the bearing end of a connecting rod between said opposed faces and means for holding said slide in a predetermined position.

2. A device of the class described, having a combination of a standard having a face plate mounted thereon, a spindle slidably and rotatively mounted in said standard, the axis of which is normal to the surface of said face plate, means for releasably holding said spindle in a fixed relation to said standard, a vise mounted on said spindle adapted to hold the bearing end of a connecting: nod". within same normal to said: axis while the piston on said connecting rod: isopposed to said face plate and means for bending said rod while mounted in said vise.

3. A connecting rod aligning jig-.consist-ingi of an upright face plate adapted to be mounted on a bench, a Spindle slidably and rotatably mounted: in said face plate, means for mounted on said spindle, a cross bar in front of said table, guide bars connecting said table and clamping said spindle" with relation to said face plate, a-verticaltab1e- RIEEERENGES" CITED The following references'are' of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 15. G'arl'som Nov. 12, 1918 1,5-I4,025 Stensrud Nov. '1, 1924 1 603 070 Comet al. Oct. 12, 1926 2,016,463 Sunnen Oct. 8, 1935 

